Via UAE (United Arab Emirates) game store Geekay Games, so the prices seem a little off. Mainly because based on the conversion rates the Prestige Edition ends up costing around $490 USD, with the Collectors at the more reasonable price of $90 USD. Why the huge difference? Well it seems the Prestige Edition comes with a towering and awesome 40cm Lord of Cinder figure. As opposed to a 25cm one in the Collectors. So then again it might not be worth it. Also, it looks like the release date of April 12, 2016 has also leaked.
Here's a look at the two versions, which for the most part look pretty much identical.